F700
Headphoneus Supremus
WM1A, even the uncapped version, does not have enough juice to power the E5000, you are right.Forgot to mention, wm1a.
There are DAPs out there with enough power, I have 2 of them, but you have to sacrifice something in return (battery life or touch screen or BT). It's all about priorities. With the right amount of power, the E5000 really opens up. My 2 cents...